Nightmares wide receiver David Repko tries to get away from a swarming South Buffalo defense during Saturday night’s 35-14 loss at Midview High School. RAY RIEDEL/CHRONICLE

EATON TWP. — Lorain County Nightmares coach Terry Murray knew what he wanted to do at halftime … but he had no way to do it.

South Buffalo Celtics quarterback Jay Truman was more than happy to take advantage, blistering the Nightmares’ base Cover 2 defense for four touchdown passes in a 35-14 Premier Amateur Football League victory at Ross Field.

Murray said the reason his team did not adjust was, simply, because it couldn’t.

“A lot of that was because we couldn’t get the guys coordinated,” he said.

“My toughest challenge at this level is to get everyone there every night. We were trying to make changes out of the Cover 2 and they weren’t picking it up.”

Former University at Buffalo receiver Marcus Rivers, who was in camp with the Green Bay Packers and Baltimore Ravens, caught nine passes for 106 yards and a pair of touchdowns while the Celtics (4-0) rolled up 23 first downs.

The South Buffalo offensive line held the Nightmares without a sack — they had 13 in two league games heading into Saturday — which allowed Truman to complete 73 percent of his passes (16-of-22).

Truman played pitch-and-catch all night with Rivers and Terrell Henry, who caught five passes for 67 yards and a touchdown.

“They played a lot of Cover 2, so we just ran the Cover 2 beaters that we’re used to,” Celtics coach Tim Delaney said. “This was (Marcus River’s) first game and he caught two touchdowns. He’s a true No. 1 receiver, and we haven’t really had that this year.”

Truman said the Nightmares’ defense didn’t offer much resistance.

“The offensive line played great,” he said. “If you get some time you can make it work. They did not adjust. … They stayed in Cover 2 the whole time so they made it easy for us.”

The Nightmares (4-2) got on the board first, moving 93 yards in 12 plays. Quarterback Cody Schuster capped the drive with a 1-yard touchdown run. Tim Jones added the extra point and, at the 5:31 mark of the first quarter, it looked like Lorain County was on its way to its fifth victory of the season.

It didn’t last long as South Buffalo reeled off the next 35 points.

“I was impressed,” Murray said of the Celtics. “We went and scouted them and it was their first game. … Maybe because it was their first game we didn’t see what we saw today. They’re a very physical team, they did the fundamental things right and, honestly, that’s how you win ballgames.”